Fair Value Measurements - Narrative (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016	Sep. 02, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of warrant	$ 7,059,262	$ 6,727,409
Loan outstanding	68,783,206	$ 66,553,053
Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of warrant	7,100,000		$ 5,800,000
Senior Secured Term Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan outstanding	68,800,000
Fair Value, Measurements, Recurring | Senior Secured Term Loan | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan outstanding	$ 72,500,000